Originally Posted by
rayjai
That looks perfect! It's looks light and low profile. what is it made of?
Mostly plastic ;-). It could be designed better but works well for me.
The one I used before was this one (also for large diameter tubes)
http://www.amazon.com/gp/product/B003LM22SC
BTW, you may want to check this
http://nordicgroup.us/cageboss/ (NSFW)